diff --git a/src/json.cc b/src/json.cc
index 81341ee6..78463fc3 100644
--- a/src/json.cc
+++ b/src/json.cc
@@ -37,441 +37,14 @@
 #include <sstream>
 
 #include "array_fun.h"
-#include "DlAbortEx.h"
-#include "error_code.h"
 #include "a2functional.h"
 #include "util.h"
-#include "fmt.h"
 #include "base64.h"
 
 namespace aria2 {
 
 namespace json {
 
-// Function prototype declaration
-namespace {
-template<typename InputIterator>
-std::pair<SharedHandle<ValueBase>, InputIterator>
-decode(InputIterator first, InputIterator last, size_t depth);
-} // namespace
-
-namespace {
-const char WS[] = { 0x20, 0x09, 0x0a, 0x0d };
-const char ESCAPE_CHARS[] = { '"', '\\', '/', '\b', '\f', '\n', '\r', '\t' };
-const size_t MAX_STRUCTURE_DEPTH = 100;
-} // namespace
-
-namespace {
-template<typename InputIterator>
-InputIterator skipWs(InputIterator first, InputIterator last)
-{
-  while(first != last && std::find(vbegin(WS), vend(WS), *first) != vend(WS)) {
-    ++first;
-  }
-  return first;
-}
-} // namespace
-
-namespace {
-template<typename InputIterator>
-void checkEof(InputIterator first, InputIterator last)
-{
-  if(first == last) {
-    throw DL_ABORT_EX2("JSON decoding failed: unexpected EOF",
-                       error_code::JSON_PARSE_ERROR);
-  }
-}
-} // namespace
-
-namespace {
-template<typename InputIterator>
-InputIterator
-decodeKeyword(InputIterator first, InputIterator last,
-              const std::string& keyword)
-{
-  size_t len = keyword.size();
-  for(size_t i = 0; i < len; ++i) {
-    checkEof(first, last);
-    if(*first != keyword[i]) {
-      throw DL_ABORT_EX2(fmt("JSON decoding failed: %s not found.",
-                             keyword.c_str()),
-                         error_code::JSON_PARSE_ERROR);
-    }
-    ++first;
-  }
-  return first;
-}
-} // namespace
-
-namespace {
-template<typename InputIterator>
-std::pair<SharedHandle<ValueBase>, InputIterator>
-decodeTrue(InputIterator first, InputIterator last)
-{
-  first = decodeKeyword(first, last, "true");
-  return std::make_pair(Bool::gTrue(), first);
-}
-} // namespace
-
-namespace {
-template<typename InputIterator>
-std::pair<SharedHandle<ValueBase>, InputIterator>
-decodeFalse(InputIterator first, InputIterator last)
-{
-  first = decodeKeyword(first, last, "false");
-  return std::make_pair(Bool::gFalse(), first);
-}
-} // namespace
-
-namespace {
-template<typename InputIterator>
-std::pair<SharedHandle<ValueBase>, InputIterator>
-decodeNull(InputIterator first, InputIterator last)
-{
-  first = decodeKeyword(first, last, "null");
-  return std::make_pair(Null::g(), first);
-}
-} // namespace
-
-namespace {
-template<typename InputIterator>
-std::pair<SharedHandle<ValueBase>, InputIterator>
-decodeString(InputIterator first, InputIterator last)
-{
-  // Consume first char, assuming it is '"'.
-  ++first;
-  std::string s;
-  InputIterator offset = first;
-  while(first != last) {
-    if(*first == '"') {
-      break;
-    }
-    if(*first == '\\') {
-      s.append(offset, first);
-      ++first;
-      checkEof(first, last);
-      if(*first == 'u') {
-        ++first;
-        InputIterator uchars = first;
-        for(int i = 0; i < 4; ++i, ++first) {
-          checkEof(first, last);
-        }
-        checkEof(first, last);
-        uint16_t codepoint = util::parseUInt(std::string(uchars, first), 16);
-        if(codepoint <= 0x007fu) {
-          unsigned char temp[1];
-          temp[0] = static_cast<char>(codepoint);
-          s.append(&temp[0], &temp[sizeof(temp)]);
-        } else if(codepoint <= 0x07ffu) {
-          unsigned char temp[2];
-          temp[0] = 0xC0u | (codepoint >> 6);
-          temp[1] = 0x80u | (codepoint & 0x003fu);
-          s.append(&temp[0], &temp[sizeof(temp)]);
-        } else if(in(codepoint, 0xD800u, 0xDBFFu)) {
-          // surrogate pair
-          if(*first != '\\' || first+1 == last ||
-             *(first+1) != 'u') {
-            throw DL_ABORT_EX2("JSON decoding failed: bad UTF-8 sequence.",
-                               error_code::JSON_PARSE_ERROR);
-          }
-          first += 2;
-          InputIterator uchars = first;
-          for(int i = 0; i < 4; ++i, ++first) {
-            checkEof(first, last);
-          }
-          checkEof(first, last);
-          uint16_t codepoint2 = util::parseUInt(std::string(uchars, first), 16);
-          if(!in(codepoint2, 0xDC00u, 0xDFFFu)) {
-            throw DL_ABORT_EX2("JSON decoding failed: bad UTF-8 sequence.",
-                               error_code::JSON_PARSE_ERROR);
-          }
-          uint32_t fullcodepoint = 0x010000u;
-          fullcodepoint += (codepoint & 0x03FFu) << 10;
-          fullcodepoint += (codepoint2 & 0x03FFu);
-          unsigned char temp[4];
-          temp[0] = 0xf0u | (fullcodepoint >> 18);
-          temp[1] = 0x80u | ((fullcodepoint >> 12) & 0x003Fu);
-          temp[2] = 0x80u | ((fullcodepoint >> 6) & 0x003Fu);
-          temp[3] = 0x80u | (fullcodepoint & 0x003Fu);
-          s.append(&temp[0], &temp[sizeof(temp)]);
-        } else {
-          unsigned char temp[3];
-          temp[0] = 0xE0u | (codepoint >> 12);
-          temp[1] = 0x80u | ((codepoint >> 6) & 0x003Fu);
-          temp[2] = 0x80u | (codepoint & 0x003Fu);
-          s.append(&temp[0], &temp[sizeof(temp)]);
-        }
-        offset = first;
-      } else {
-        if(*first == 'b') {
-          s += "\b";
-        } else if(*first == 'f') {
-          s += "\f";
-        } else if(*first == 'n') {
-          s += "\n";
-        } else if(*first == 'r') {
-          s += "\r";
-        } else if(*first == 't') {
-          s += "\t";
-        } else {
-          s.append(first, first+1);
-        }
-        ++first;
-        offset = first;
-      }
-    } else {
-      ++first;
-    }
-  }
-  checkEof(first, last);
-  if(std::distance(offset, first) > 0) {
-    s.append(offset, first);
-  }
-  if(!util::isUtf8(s)) {
-    throw DL_ABORT_EX2("JSON decoding failed: Non UTF-8 string.",
-                       error_code::JSON_PARSE_ERROR);
-  }
-  ++first;
-  return std::make_pair(String::g(s), first);
-}
-} // namespace
-
-namespace {
-template<typename InputIterator>
-void checkEmptyDigit(InputIterator first, InputIterator last)
-{
-  if(std::distance(first, last) == 0) {
-    throw DL_ABORT_EX2("JSON decoding failed: zero DIGIT.",
-                       error_code::JSON_PARSE_ERROR);
-  }
-}
-} // namespace
-
-namespace {
-template<typename InputIterator>
-void checkLeadingZero(InputIterator first, InputIterator last)
-{
-  if(std::distance(first, last) > 2 && *first == '0') {
-    throw DL_ABORT_EX2("JSON decoding failed: leading zero.",
-                       error_code::JSON_PARSE_ERROR);
-  }
-}
-} // namespace
-
-namespace {
-template<typename InputIterator>
-std::pair<SharedHandle<ValueBase>, InputIterator>
-decodeNumber(InputIterator first, InputIterator last)
-{
-  std::string s;
-  if(*first == '-') {
-    s.append(first, first+1);
-    ++first;
-  }
-  InputIterator offset = first;
-  while(first != last && in(*first, '0', '9')) {
-    ++first;
-  }
-  checkEof(first, last);
-  checkEmptyDigit(offset, first);
-  checkLeadingZero(offset, first);
-  s.append(offset, first);
-  bool fp = false;
-  if(*first == '.') {
-    fp = true;
-    s.append(first, first+1);
-    ++first;
-    offset = first;
-    while(first != last && in(*first, '0', '9')) {
-      ++first;
-    }
-    checkEof(first, last);
-    checkEmptyDigit(offset, first);
-    s.append(offset, first);
-  }
-  if(*first == 'e') {
-    fp = true;
-    s.append(first, first+1);
-    ++first;
-    checkEof(first, last);
-    if(*first == '+' || *first == '-') {
-      s.append(first, first+1);
-      ++first;
-    }
-    offset = first;
-    while(first != last && in(*first, '0', '9')) {
-      ++first;
-    }
-    checkEof(first, last);
-    checkEmptyDigit(offset, first);
-    s.append(offset, first);
-  }
-  if(fp) {
-    // Since we don't have floating point coutner part in ValueBase,
-    // we just treat it as string.
-    return std::make_pair(String::g(s), first);
-  } else {
-    Integer::ValueType val = util::parseLLInt(s);
-    return std::make_pair(Integer::g(val), first);
-  }
-}
-} // namespace
-
-namespace {
-void checkDepth(size_t depth)
-{
-  if(depth >= MAX_STRUCTURE_DEPTH) {
-    throw DL_ABORT_EX2("JSON decoding failed: Structure is too deep.",
-                       error_code::JSON_PARSE_ERROR);
-  }
-}
-} // namespace
-
-namespace {
-template<typename InputIterator>
-std::pair<SharedHandle<ValueBase>, InputIterator>
-decodeArray(InputIterator first, InputIterator last, size_t depth)
-{
-  checkDepth(depth);
-  SharedHandle<List> list = List::g();
-  // Consume first char, assuming it is '['.
-  ++first;
-  first = skipWs(first, last);
-  checkEof(first, last);
-  if(*first != ']') {
-    while(1) {
-      std::pair<SharedHandle<ValueBase>, InputIterator>
-        r = decode(first, last, depth);
-      list->append(r.first);
-      first = r.second;
-      first = skipWs(first, last);
-      if(first == last || (*first != ',' && *first != ']')) {
-        throw DL_ABORT_EX2("JSON decoding failed:"
-                           " value-separator ',' or ']' is not found.",
-                           error_code::JSON_PARSE_ERROR);
-      }
-      if(*first == ']') {
-        break;
-      }
-      ++first;
-    }
-  }
-  ++first;
-  return std::make_pair(list, first);
-}
-} // namespace
-
-namespace {
-template<typename InputIterator>
-std::pair<SharedHandle<ValueBase>, InputIterator>
-decodeObject(InputIterator first, InputIterator last, size_t depth)
-{
-  checkDepth(depth);
-  SharedHandle<Dict> dict = Dict::g();
-  // Consume first char, assuming it is '{'
-  ++first;
-  first = skipWs(first, last);
-  checkEof(first, last);
-  if(*first != '}') {
-    while(1) {
-      std::pair<SharedHandle<ValueBase>, InputIterator>
-        keyRet = decodeString(first, last);
-      first = keyRet.second;
-      first = skipWs(first, last);
-      if(first == last || *first != ':') {
-        throw DL_ABORT_EX2("JSON decoding failed:"
-                           " name-separator ':' is not found.",
-                           error_code::JSON_PARSE_ERROR);
-      }
-      ++first;
-      std::pair<SharedHandle<ValueBase>, InputIterator>
-        valueRet = decode(first, last, depth);
-      dict->put(downcast<String>(keyRet.first)->s(), valueRet.first);
-      first = valueRet.second;
-      first = skipWs(first, last);
-      if(first == last || (*first != ',' && *first != '}')) {
-        throw DL_ABORT_EX2("JSON decoding failed:"
-                           " value-separator ',' or '}' is not found.",
-                           error_code::JSON_PARSE_ERROR);
-      }
-      if(*first == '}') {
-        break;
-      }
-      ++first;
-      first = skipWs(first, last);
-      checkEof(first, last);
-    }
-  }
-  ++first;
-  return std::make_pair(dict, first);
-}
-} // namespace
-
-namespace {
-template<typename InputIterator>
-std::pair<SharedHandle<ValueBase>, InputIterator>
-decode(InputIterator first, InputIterator last, size_t depth)
-{
-  first = skipWs(first, last);
-  if(first == last) {
-    throw DL_ABORT_EX2("JSON decoding failed:"
-                       " Unexpected EOF in term context.",
-                       error_code::JSON_PARSE_ERROR);
-  }
-  if(*first == '[') {
-    return decodeArray(first, last, depth+1);
-  } else if(*first == '{') {
-    return decodeObject(first, last, depth+1);
-  } else if(*first == '"') {
-    return decodeString(first, last);
-  } else if(*first == '-' || in(*first, '0', '9')) {
-    return decodeNumber(first, last);
-  } else if(*first == 't') {
-    return decodeTrue(first, last);
-  } else if(*first == 'f') {
-    return decodeFalse(first, last);
-  } else if(*first == 'n') {
-    return decodeNull(first, last);
-  } else {
-    throw DL_ABORT_EX2("JSON decoding failed:"
-                       " Unexpected character in term context.",
-                       error_code::JSON_PARSE_ERROR);
-  }
-}
-} // namespace
-
-template<typename InputIterator>
-SharedHandle<ValueBase> decode(InputIterator first, InputIterator last)
-{
-  first = skipWs(first, last);
-  if(first == last) {
-    throw DL_ABORT_EX2("JSON decoding failed:"
-                       " Unexpected EOF in term context.",
-                       error_code::JSON_PARSE_ERROR);
-  }
-  std::pair<SharedHandle<ValueBase>, InputIterator> r;
-  if(*first == '[') {
-    r = decodeArray(first, last, 1);
-  } else if(*first == '{') {
-    r = decodeObject(first, last, 1);
-  } else {
-    throw DL_ABORT_EX2("JSON decoding failed:"
-                       " Unexpected EOF in term context.",
-                       error_code::JSON_PARSE_ERROR);
-  }
-  return r.first;
-}
-
-SharedHandle<ValueBase> decode(const std::string& json)
-{
-  return decode(json.begin(), json.end());
-}
-
-SharedHandle<ValueBase> decode(const unsigned char* json, size_t len)
-{
-  return decode(json, json+len);
-}
-
 std::string jsonEscape(const std::string& s)
 {
   std::string t;
diff --git a/src/json.h b/src/json.h
index 7538a2f2..7056dfec 100644
--- a/src/json.h
+++ b/src/json.h
@@ -42,11 +42,6 @@ namespace aria2 {
 
 namespace json {
 
-// Parses JSON text defined in RFC4627.
-SharedHandle<ValueBase> decode(const std::string& json);
-
-SharedHandle<ValueBase> decode(const unsigned char* json, size_t len);
-
 std::string jsonEscape(const std::string& s);
 
 template<typename OutputStream>
diff --git a/test/JsonTest.cc b/test/JsonTest.cc
index 79e4a5d8..aac95f70 100644
--- a/test/JsonTest.cc
+++ b/test/JsonTest.cc
@@ -12,414 +12,18 @@ namespace aria2 {
 class JsonTest:public CppUnit::TestFixture {
 
   CPPUNIT_TEST_SUITE(JsonTest);
-  CPPUNIT_TEST(testDecode);
-  CPPUNIT_TEST(testDecode_error);
   CPPUNIT_TEST(testEncode);
   CPPUNIT_TEST(testDecodeGetParams);
   CPPUNIT_TEST_SUITE_END();
 private:
 
 public:
-  void testDecode();
-  void testDecode_error();
   void testEncode();
   void testDecodeGetParams();
 };
 
 CPPUNIT_TEST_SUITE_REGISTRATION( JsonTest );
 
-void JsonTest::testDecode()
-{
-  {
-    // empty object
-    SharedHandle<ValueBase> r = json::decode("{}");
-    const Dict* dict = downcast<Dict>(r);
-    CPPUNIT_ASSERT(dict);
-  }
-  {
-    // empty object
-    SharedHandle<ValueBase> r = json::decode("{  }");
-    const Dict* dict = downcast<Dict>(r);
-    CPPUNIT_ASSERT(dict);
-  }
-  {
-    // empty array
-    SharedHandle<ValueBase> r = json::decode("[]");
-    const List* list = downcast<List>(r);
-    CPPUNIT_ASSERT(list);
-  }
-  {
-    // empty array
-    SharedHandle<ValueBase> r = json::decode("[ ]");
-    const List* list = downcast<List>(r);
-    CPPUNIT_ASSERT(list);
-  }
-  {
-    // empty string
-    SharedHandle<ValueBase> r = json::decode("[\"\"]");
-    const List* list = downcast<List>(r);
-    CPPUNIT_ASSERT(list);
-    const String* s = downcast<String>(list->get(0));
-    CPPUNIT_ASSERT_EQUAL(std::string(), s->s());
-  }
-  {
-    // string
-    SharedHandle<ValueBase> r = json::decode("[\"foobar\"]");
-    const List* list = downcast<List>(r);
-    CPPUNIT_ASSERT(list);
-    const String* s = downcast<String>(list->get(0));
-    CPPUNIT_ASSERT_EQUAL(std::string("foobar"), s->s());
-  }
-  {
-    // string with escape
-    SharedHandle<ValueBase> r = json::decode("[\"\\\\foo\\\"\\\"bar\"]");
-    const List* list = downcast<List>(r);
-    CPPUNIT_ASSERT(list);
-    const String* s = downcast<String>(list->get(0));
-    CPPUNIT_ASSERT_EQUAL(std::string("\\foo\"\"bar"), s->s());
-  }
-  {
-    // string with escape
-    SharedHandle<ValueBase> r = json::decode("[\"foo\\\"\"]");
-    const List* list = downcast<List>(r);
-    CPPUNIT_ASSERT(list);
-    const String* s = downcast<String>(list->get(0));
-    CPPUNIT_ASSERT_EQUAL(std::string("foo\""), s->s());
-  }
-  {
-    // string: utf-8 1 to 3 bytes.
-    SharedHandle<ValueBase> r = json::decode("[\"\\u0024\\u00A2\\u20AC\"]");
-    const List* list = downcast<List>(r);
-    CPPUNIT_ASSERT(list);
-    const String* s = downcast<String>(list->get(0));
-    CPPUNIT_ASSERT_EQUAL(std::string("$¢€"), s->s());
-  }
-  {
-    // string: utf-8 4 bytes
-    SharedHandle<ValueBase> r = json::decode("[\"\\uD852\\uDF62\"]");
-    const List* list = downcast<List>(r);
-    CPPUNIT_ASSERT(list);
-    const String* s = downcast<String>(list->get(0));
-    const unsigned char arr[] = { 0xF0u, 0xA4u, 0xADu, 0xA2u };
-    CPPUNIT_ASSERT_EQUAL(std::string(vbegin(arr), vend(arr)), s->s());
-  }
-  {
-    // null
-    SharedHandle<ValueBase> r = json::decode("[null]");
-    const List* list = downcast<List>(r);
-    CPPUNIT_ASSERT(list);
-    const Null* s = downcast<Null>(list->get(0));
-    CPPUNIT_ASSERT(s);
-  }
-  {
-    // true, false
-    SharedHandle<ValueBase> r = json::decode("[true, false]");
-    const List* list = downcast<List>(r);
-    CPPUNIT_ASSERT(list);
-    const Bool* trueValue = downcast<Bool>(list->get(0));
-    CPPUNIT_ASSERT(trueValue);
-    CPPUNIT_ASSERT(trueValue->val());
-    const Bool* falseValue = downcast<Bool>(list->get(1));
-    CPPUNIT_ASSERT(falseValue);
-    CPPUNIT_ASSERT(!falseValue->val());
-  }
-  {
-    // object: 1 member
-    SharedHandle<ValueBase> r = json::decode("{\"foo\":[\"bar\"]}");
-    const Dict* dict = downcast<Dict>(r);
-    CPPUNIT_ASSERT(dict);
-    const List* list = downcast<List>(dict->get("foo"));
-    CPPUNIT_ASSERT(list);
-    const String* s = downcast<String>(list->get(0));
-    CPPUNIT_ASSERT_EQUAL(std::string("bar"), s->s());
-  }
-  {
-    // object: 2 members
-    SharedHandle<ValueBase> r = json::decode("{\"\":[\"bar\"], "
-                                             "\"alpha\" : \"bravo\"}");
-    const Dict* dict = downcast<Dict>(r);
-    CPPUNIT_ASSERT(dict);
-    const List* list = downcast<List>(dict->get(""));
-    CPPUNIT_ASSERT(list);
-    const String* s = downcast<String>(list->get(0));
-    CPPUNIT_ASSERT_EQUAL(std::string("bar"), s->s());
-    const String* str = downcast<String>(dict->get("alpha"));
-    CPPUNIT_ASSERT_EQUAL(std::string("bravo"), str->s());
-  }
-  {
-    // array: 2 values
-    SharedHandle<ValueBase> r = json::decode("[\"foo\", {}]");
-    const List* list = downcast<List>(r);
-    CPPUNIT_ASSERT(list);
-    const String* s = downcast<String>(list->get(0));
-    CPPUNIT_ASSERT_EQUAL(std::string("foo"), s->s());
-    const Dict* dict = downcast<Dict>(list->get(1));
-    CPPUNIT_ASSERT(dict);
-  }
-  {
-    // Number: currently we handle floating point number as string
-    SharedHandle<ValueBase> r = json::decode("[0,-1,1.2,-1.2e-10,-1e10]");
-    const List* list = downcast<List>(r);
-    CPPUNIT_ASSERT(list);
-    const Integer* i = downcast<Integer>(list->get(0));
-    CPPUNIT_ASSERT_EQUAL((Integer::ValueType)0, i->i());
-    const Integer* i1 = downcast<Integer>(list->get(1));
-    CPPUNIT_ASSERT_EQUAL((Integer::ValueType)-1, i1->i());
-    const String* s2 = downcast<String>(list->get(2));
-    CPPUNIT_ASSERT_EQUAL(std::string("1.2"), s2->s());
-    const String* s3 = downcast<String>(list->get(3));
-    CPPUNIT_ASSERT_EQUAL(std::string("-1.2e-10"), s3->s());
-    const String* s4 = downcast<String>(list->get(4));
-    CPPUNIT_ASSERT_EQUAL(std::string("-1e10"), s4->s());
-  }
-  {
-    // escape chars: ", \, /, \b, \f, \n, \r, \t
-    SharedHandle<ValueBase> r =json::decode("[\"\\\"\\\\\\/\\b\\f\\n\\r\\t\"]");
-    const List* list = downcast<List>(r);
-    const String* s = downcast<String>(list->get(0));
-    CPPUNIT_ASSERT_EQUAL(std::string("\"\\/\b\f\n\r\t"), s->s());
-  }
-  {
-    // string: literal + escaped chars.
-    SharedHandle<ValueBase> r =
-      json::decode("[\"foo\\u0024b\\u00A2\\u20ACbaz\"]");
-    const List* list = downcast<List>(r);
-    CPPUNIT_ASSERT(list);
-    const String* s = downcast<String>(list->get(0));
-    CPPUNIT_ASSERT_EQUAL(std::string("foo$b¢€baz"), s->s());
-  }
-
-}
-
-void JsonTest::testDecode_error()
-{
-  {
-    try {
-      // object
-      SharedHandle<ValueBase> r = json::decode("{");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // object
-      SharedHandle<ValueBase> r = json::decode("}");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // object
-      SharedHandle<ValueBase> r = json::decode("{\"\":");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // object
-      SharedHandle<ValueBase> r = json::decode("{\"\":\"\",");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // array
-      SharedHandle<ValueBase> r = json::decode("[");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // array
-      SharedHandle<ValueBase> r = json::decode("]");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // array
-      SharedHandle<ValueBase> r = json::decode("[\"\"");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // array
-      SharedHandle<ValueBase> r = json::decode("[\"\",");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // string
-      SharedHandle<ValueBase> r = json::decode("[\"foo]");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // string
-      SharedHandle<ValueBase> r = json::decode("[\"\\u\"]");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // string
-      SharedHandle<ValueBase> r = json::decode("[\"\\u");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // string
-      SharedHandle<ValueBase> r = json::decode("[\"\\u000\"]");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // string
-      SharedHandle<ValueBase> r = json::decode("[\"\\u000");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // string
-      SharedHandle<ValueBase> r = json::decode("[\"\\uD852foo\"]");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // string
-      SharedHandle<ValueBase> r = json::decode("[\"\\uD852");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // string
-      SharedHandle<ValueBase> r = json::decode("[\"\\uD852\\u\"]");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // string
-      SharedHandle<ValueBase> r = json::decode("[\"\\uD852\\u");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // string
-      SharedHandle<ValueBase> r = json::decode("[\"\\uD852\\u0000\"]");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // string
-      SharedHandle<ValueBase> r = json::decode("[\"\\uD852\\uDF62");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // object
-      SharedHandle<ValueBase> r = json::decode("{:\"\"}");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // object
-      SharedHandle<ValueBase> r = json::decode("{\"foo\":}");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // number
-      SharedHandle<ValueBase> r = json::decode("{00}");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // number
-      SharedHandle<ValueBase> r = json::decode("{1.}");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // number
-      SharedHandle<ValueBase> r = json::decode("{1.1e}");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-  {
-    try {
-      // bool
-      SharedHandle<ValueBase> r = json::decode("{t");
-      CPPUNIT_FAIL("exception must be thrown.");
-    } catch(RecoverableException& e) {
-      // success
-    }
-  }
-}
-
 void JsonTest::testEncode()
 {
   {